ML Engineer / Data Scientist / Sergey

5+ years of experienceMoscow, Russia

Experienced Data Scientist and Machine Learning Engineer with a Master’s degree in Machine Learning and a strong background in backend development for financial-sector applications. Specializing in NLP, LLMs, and RAG systems, with proven experience building end-to-end ML solutions from requirements gathering to production deployment. Experienced in Python development, FastAPI, backend services, ETL pipelines, and analytical systems, delivering scalable and production-ready solutions that combine machine learning with robust backend engineering.

Skills

  • Production NLP with LLMs (classification, extraction, RAG)
  • Prompt engineering and LLM optimization
  • Credit risk modeling and scoring systems
  • FastAPI backend development with PostgreSQL
  • ETL pipeline design and optimization
  • PyTorch and scikit-learn for ML model development
  • Automated data collection and web scraping
  • Financial analytics and reporting automation

Experience

Feb 2025 — Apr 2025

Data Scientist

Innotech
  • Implemented NLP projects using LLMs (text classification, key phrase extraction, contextual response generation)
  • Developed and optimized prompt engineering system, improving model output accuracy
  • Built demo applications to visualize NLP solutions for stakeholder presentations
Nov 2023 — Jan 2025

Middle Python Developer

SME Bank (MSP Bank)
  • Developed modules for calculating risk metrics (credit rating, probability of default)
  • Integrated credit scoring models for legal entities into production
  • Automated data ingestion via API integration with corporate data warehouses and external services
Mar 2023 — Nov 2023

Junior Python Developer

Sber
  • Automated extraction and processing of logs from storage systems at scale
  • Optimized ETL pipelines by implementing data cleaning and aggregation stages in PostgreSQL
  • Refactored SQL queries and scripts, reducing code maintenance time
Mar 2022 — Mar 2023

Data Analyst / Python Developer

Moscow Metro
  • Automated report generation using Pandas and NumPy
  • Built backend service for electronic journal from scratch (Flask, REST API) with authentication
  • Visualized executive reports using Matplotlib, displaying performance trends across departments
Apr 2020 — Jun 2020

Research Intern

HSE University
  • Automated social media data collection using Requests, BeautifulSoup, and Selenium
  • Conducted data analysis and visualization to identify patterns and trends

Education

Jun 2025

MSc in Machine Learning on Texts and Graphs

Financial University under the Government of the Russian Federation
Jun 2009

BSc in Ground Transport Systems

Moscow State Industrial University

Contact

Takovska 5, Belgrade, 🇷🇸 Serbia.

Email: [email protected]